Sprinkling system for use with concrete paving machines



June v28, 1932. A. F. JOHNSON SPRINKLING SYSTEM FOR USE WITH CONCRETEPAVING MACHINES Fil'ed May 21, 1928 m .w QQ,

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Patented June 28, 1932 lranma UNITEDSTATES PATENT oFFlca `ALGOT F.JOHNSON, OE MINNEAVPOLISQMINNESOTA, ASSIGNOR TO KOEHRING COMPANY, QFIl!IITAUKEFL`l` WISCONSIN, A, CORPORATION 0F IISCON'SIIT SPRINKLINGSYSTEM FOR 'USE XVITHCONCRETE PAVING MACHINES l Application mea May 21,

This invention relates to a sub-grade sprinkling system for use withconcrete roadpav ing apparatus, and has kfor its main object kto providean extremely simpley and highly efficient sprinkling system for wettingdown a road bed before the concrete ,isv poured thereon. f y f In theaccompanying drawing, which illustrates the invention, like charactersindicate like parts throughout the several views.

Referring to the drawing:

Fig. 1 is a diagrammatic side elevation of several machines used inmaking concrete roads and diagrammatically illustrating my sprinklingsystem in connection with certain uses thereof;

Fig. 2 is a not shown;

Fi 3 is a section taken on the line 3-3 of Fig. 1; and n Fig. 4 is asection taken on the line 4-4 of he numeral 5 indicates a road bed, thenumeral 6 concrete road side forms between which concrete is pouredwhile making pavements, the numeral 7 a concrete road paving kmachinearranged to travel on the road bed under its own power, the numeral 8 asub rade planer arranged to travel on the side 80w orms 6 behind thepaver and to be drawn thereby through suitable connections includingdrawbars 9, and the numeral 9 a concrete road finishing machine arrangedto travel on the side forms 6 over the road bed, after the concrete hasbeen poured between the forms, for surfacing the concrete road.

The paving machine7 comprises in part a main frame structure 10 that ismounted on a truck or the like 11, a charging skip 12, a mixing planview of Fig. 1, some parts drum not shown, a discharge spout 13, a'distributing boom 14, a distributing bucket 15 havingal dump bottom 16,and operators control mechanism. The control mechanism includes asteering wheel 17 and alever 18, by manipulation of which wheels 19 ofthe truck or the like 11 will be caused to become operatively connectedto alsuitable source of power, not shown, for driving said aving machineover the road bed.

59 The sub-grade planer comprises a frame 20 yalways inoperative when.

192s. seran No. 279,463.

mounted on wheels 21, arranged to run on the yside forms 6and roadscraping members 22. Mounted on brackets 28 that are secured to andextend forward from the main frame 7 of the paving machine, is a longsprinkler-distributing head 24 that is closed at both ends and isprovided with aseries of spraying nozzles 25. The distributing head 24extends transversely over the road bed and the nozzles 25 are closeenoughftogether .to `insure an even distribution of water to the entirearea of the road bed between the side rforms over which the sprayer ismoved. The distributing head 211 is connected to a source of supply,rnotshown, through a pipe line 27, a hand-operated volume l. control valve28, and an automatically actuated shut-oil` valve 29. 1

Mounted on brackets carried by andk eX- tending to the rear of the frame20y of the sub-grade planer 8, is a long sprinklerfdistributing head 31that is `of the same description as the distributing head 24 andisprovided.r with a series of spraying nozzles `32. The spray head 21 isconnected to the supply tank 26 through La vpipe 26, the hand-operatedvolume control valve 38, hose line 34, shut-olf valve 29 and pipe line27 The shutoli' valve 29 is provided with an operating arm y that isoperatively connected "to the control lever 18 by a li ,k 36.*` a y fRoad paving machines of the kind kshown move over the road step bystep.` When the forms have been filled with concrete for as great adistance as is possible from one position, the machine is moved ahead toa desired position and stopped for further dumping of concrete betweenthe forms. In order to make the machine go yforward one step ofmovement, vit is necessary to manipulate the control lever 18 and,hence, the shut-off valve 29 will be automatically opened and willremainopennntil the lever 18 is moved to an inoperative or normal position, atwhich time the shut-olf valve. 29 will be closed and the sprinklerrendered inoperative. It is obviousr that the sprinklersare the machineTis stopped, but that they are always voperative whenthe machine kis, inmotion, unlessone .-100

or both be shut off manually by the valves 28 or 33.

In order to keep the sprinkler from eX- cessive dripping and formingpuddles in the road after the machine has been stopped and the shut-offvalve closed, I extend the spraying nozzles 25 or 32 through and intothe distributing heads 24 and 3l. In thi-s way, a large percentage ofthe water. is retained within the system.

If road beds are not moistened before the concrete is poured, a largepercentage of the water in the concrete is absorbed by the drying earthand highlyefficient results cannot readily be obtained. It has been thecom-monpractice in the trade to sprinkle the road bed'by the use of ahose or-the like from the side of the road. This, of course, takesconsiderable time and, also, this method is not always efficient, due tothe fact that an even amount. of moisture to all portions of the road isnot likely to be obtained; some parts usually appear relatively dry,while other parts will have puddles of water formed thereon".

Byv the use of my sprinkling system, any desired amount of moisture maybe applied evenly to all portions of the road bed, with little or noeffort on the part of the crew. It may, at times, be desired to use butone of the sprinkling devices and, in that case, the other maybe throwncompletely out of action y turning down the hand-operated volume controlvalve 28 or 33.

What I claim is:l

l. The combination with a paving machine arranged to move over a roadbed and pour concrete thereon, of a siib-grade leveling inachineattached to said paving machine for movement-s therewith for action onthe road before the concrete is poured thereon, of a sprinkler carriedby said leveling machine for distributing water on the road' bedtherebehindy and ahead of the portion of the road being covered withconcrete, and a sarinkler carried by the, paving machine fordistributing water on the road bed ahead of the leveling machine.

2. The combination withva paving machine arranged to move over a roadbed and pour concrete thereon, of a sub-gradeleveling machine attachedto said paving machine for movements therewith for action on the roadbefore the concrete is poured thereon, of a sprinkler carried by saidleveling machine-for distributing Water on the road bed therebehind and'ahead of the portion of the road being covered With concrete, asprinkler carri'ed by the paving machine for distributing Water on theroad bedV ahead of the leveling machine, and means cooperative withcertain paving machine mechanismfor cuttingboth ofsaid sprinklers intoand out of action auto` matically. Y

3. The combination withk a paving machine of operation, and

ifeeaio arranged to move over a road bed and to pour concrete thereon,and a subgrade levelling machine attached to the paving machine formovements therewith for action on the road before the concrete is pouredthereon, of sprinklinor means carried by the levelling machine fordistributing water on the road bed therebehind and ahead of the portionof the road being covered with concrete, av second sprinkling meanscarried by the paving machine for distributing water on the road bed inadvance of the paving machine, a supply line for heading Water from asource of supply to the sprinkling means, means under control of anoperator for selectively bringing the respective sprinkling means intoand out means for automatically renderingoperative and inoperative thesupply of Water passing through the Asupply line as the paving machineplaced into and out of movement along the road bed.

In testimony whereof I aiiiX my signature.

ALGOT F. JOHNSON.

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